已知氢气和碳燃烧的热化学方程式为:
①2H2(g)+O2(g)=2H2O(l) △H1=-akJ·mol-1
②H2(g)+1/2O2(g)=H2O(g) △H2=-bkJ·mol-1
③C(s)+1/2O2(g)=CO(g) △H3=-ckJ·mol-1
④C(s)+O2(g)=CO2(g) △H4=-dkJ·mol-1
下列说法错误的是
A.氢气的燃烧热为△H=-akJ·mol-1 |
B.c<d |
C.一氧化碳的燃烧热为△H=-(d-c)kJ·mol-1 |
D.0.5a>b |